Hose nozzle



A. NIELSEN HOSE NOZZLE May 29, 1945.

Filed Aug. 30, 1943 2 Sheets-Sheet l ADOLPHMELSEM INVENTOR.

@/MW a. m

ATTORNEY.

Patented May 29 1945 UNITED STATES PATENT orrreg Adolph Nielsen, Oakland, Calif., assignor of onehalf to Peter Gaird, Oakland, Calif.

Application August 30, 1943, Serial No. 500,727

2 Claims (01. 299-141) rangement is provided which is manipulated bya single operating member to direct fluid either to the conical spray orifice or the solid stream orifice, either separately or at the same time. The conical spray orifice is adjustable so that the character of the conical spray may.be varied.

One form which the invention may assume is exemplified in the following description and illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a perspective view showing th exterior of my improved nozzle and the manner of its operation.

Fig.2 is a longitudinal section through the nozzleshowing certain features of construction.

Fig. 3 i likewise a longitudinal section through the nozzle taken at right angles to Fig. 2.

Fig. 4 is a transverse sectional view taken on line IVIV of Fig. 2.

Fig. 5 is a separate view of the valve yoke.

Referring more particularly to the accompanying drawings, 10 indicates a fire hose nozzle embodying the preferred form of my invention. The nozzle It includes a nozzle body il formed with a female coupling connection l2 and a coaxial nozzle barrel I4. Intermediate the coupling connection l2 and the barrel the body Ii is formed with a cylindrical valve chamber l5 disposed with its longitudinal axis perpendicularly to the axis of-the connection l2 and the nozzle barrel It so as to intersect the same.

The wall iii of the valve chamber l5 between the chamber i5 and the interior of the barrel I4 is formed with a primary port I1 disposed coaxially of the barrel and the coupling connection l2. It is also formed with a secondary port l8 spaced a radial distance from the primary port I1. The primary port I1 constitutes a communicating passageway between the interior of the valve chamber l5 and a center nozzle tube IS. The innermost end of the center nozzle tube l 9 is threaded into the wall it of the valve chamber l5 concentrically with respect to the primary port I1 and the nozzle barrel l4, so that fluid discharging through the port ll may pass through the tube It. I

At its outermost or discharge end the nozzle tube 19 is formed with a discharge orifice 20 of a diameter less than the interior diameter of the tube It. It should be pointed out that the inner diameter of the tube It tapers gradually from its inner end adjacent the primary port I! to the point where it terminates at the inner endv of the discharge orifice 20.

Mounted concentrically within the nozzletube I9 is a Venturi nozzle 2|, the interior diameter of which approximates the diameter of the orifice 20. The exterior diameter of the Venturi nozzle 2| is, as illustrated, considerably less than the interior diameter of the nozzle tube It. The inner end of the Venturi nozzle is spaced from the primary port l8 and its outer end is spaced from the inner end or the discharge orifice 20. The Venturi nozzle 2| is maintained in the position shown by means of four radial ribs 22 which are complemental to the inner-diameter oi the nozzle tube It and which are latchedat their inner ends between the inner end of the nomle tube i8 and the wall It, as shown.

By means of the peculiar construction of the nozzle tube l9 and its associated Venturi nozzle 2| and the relationshipof the latter with the primary port l1 and the discharge orifice 20. water passing through the primary port I! under pressure will discharge through the discharge orifice 20 in a solid stream with a minimum of back pressure on the nozzle. The effect of the Venturi construction Just described is such that a cushion is provided for the fluid. v

It, will be noticed that the exterior diameter of the nozzle tube I 9 is less than the interior diameter of the nozzle barrel l4, providing a tapered annular fluid passageway 23 therebetween. This passageway communicates with the secondary port It so that fluid passing from the valve chamber it through the port It will enter only the secondary annular passageway 23 and seek to discharge from the foremost end thereof. The cross-sectional area of the secondary annular passageway 23 decreases toward the discharge end of the nozzle, as illustrated.

At this end of the barrel I! there is fitted a spray collar 24 which isannular andwhich has a sleeve portion 25 threaded on the end of the nozzle barrel l4.- This threaded connection is such that by rotating the collar 24, it may be moved coaxially of the barrel andcoaxial of a spray head 26 fixed at the outermost end of the nozzle tube It. The spray head 28 is frusto-conlcal, as illustrated. and is complemental to a frusto-conical bore 21 in the end of the spray collar 28. By adjusting the spray collar 24 coaxially of the sprayhead 28 by means of the threaded connection referred to, a circular orifice of a conical naturemay be created between the complemental surfaces thereof. The radial dimension of such-an orifice may likewise be adjusted in the samefashion.

It is obvious that by having a frusto-conica orifice of a minute-radial dimension, that with sufilcient pressure a conical curtain of water fog valve member B is of a circumferential dimenmay be created. That is to say, the water will be finally atomized and will emerge through that orifice in a conical spray of a considerable angle.

Such sprays are useful in defending a fireman against flame and smoke and for various fire extinguishing purposes.

In the present instance the nozzle It may be used to elect a solid central stream, a conical protective curtain such as just described, or a combination of the two. Of course, by adjusting the radial dimension of the spray orifice by ad justing the spray collar 28, the character of the conical water spray may be varied.

(me of the principal features of nozzle'is the fact that by manipulation of a single handle, the character of the streams ejected from the nozzle may be regulated; that is to say, a solid center stream, with or without a surrounding conical spray, or a conical, spray with or without the center stream, the character of the conical spray being adjustable independently by adjustment of the spray collar 28.

To accomplish this I mount a valve yoke 28 coaxially within the valve chamber l5. This valve yoke has coaxial trunnions 28 at opposite ends thereof journalled in bearings 30; provided with suitable fluid-tight packing means 8|. At one end of the valve chamber it is provided with a head member 82 in which one of the bearings 88 my present is formed, which valve head member 82 is integral with the nozzle body. At the other end 01 the chamber 15, however, the valve body is fitted with a removable head 88 threaded into the body, as

prevent fluid leakage through the bearings, Ob viously, any other typeof bearings and packingmaybeprovided. a The valve yoke 28 carries two valve guides 38 sion that it can cover both of these ports simultaneously,-as illustrated. The valve member A is only suillcient in circumferential dimension .to cover the secondary port I8.

To revolve the yoke and thus operate the valves with relation to the ports -!I and I8, I provide a which extend lengthwise of the yoke at a spaced radial distance from the axial center thereof. It should be pointed out, of course, that the axial center of the yoke 28 is, the axial center of the chamber I I. The two valve guides 84 are spaced radially from this center at a distance less than the radial dimension of the valve chamber l5, and are each provided with a longitudinal guide slot 35 which receives the tongue 88 of a valve member 81. In this instance the two valve members are of different circumferentialdimensions and I will designate one valve member as 'the secondary valve and indicate the same on the drawings as A and the other valve member as the primary valve indicated on the drawings as B." Y The tongues 88 snugly but slidably fit the guide move the valve member B to a position uncovering the secondary port l8 but maintaining the primary port I! closed, Thus, water will only be directed for the purpose of creating a spray. That is to say, the water will only discharge through the secondary port l8 into the secondary annular passageway 28 and thence through the spray orific between thespray collar 24 and the spray head 28. However, by continuing to turn the valve yoke 28 by means of the bailhandle 39, the

valve B will be moved to also uncover the primary port II, at which time there will be a conical spray as well as a solid spray discharged from the end of the nozzle. At the same time the character of the conical spray may be varied by adjustment of the spray collar 24 with respect to the spray head 28, as previously described.

'11 it is only desired to have a solid spray, the

valve yoke 28 is revolved-still further so as to posi- U tionthe valve A over the secondary port l8, at

which time the primary port ll will be uncovered.

Thus, when the handle 39 is in its most forward position, no water will be discharged through the nozzle at all. During its intermediatepositlons, either a conical spray 'or a combination of a conical'spray and center solid stream may beejected. When it is in its most rearmost position, the valve A will cover the secondary port l8 and only a solid center spray will discharge from the nozzle. Thus, by movement of the operating handie 88 in one direction, either a conical spray or a combination of a conical spray witha solid center spray, or a solid center spray itself maybe discharged from the nozzle.

Thus, the user of the nozzle may grasp the valve body in one hand and grasp the operating handle 89 in the other hand, and by very simple manipulation effect either character of spray or combination of both. If he desires, he may. remove his hand from the handle 39 and adjust the spray collar to change the character of the conical spray.

It is obvious that by the valve construction that the valves will automatically take up any wear. due to the fact that they are constantly urged by spring pressure radially outward and are free to move in this direction because of their peculiar grooves 38, but permit radial movement of the 78 mounting. It is also obvious that when the valves are in closed position, that they are assisted in maintaining a fluid-tight seat because of the pressure of the entrance water against them.

From the foregoing it is obvious that I have provided a very efllcient nozzle, and although I have illustrated and described the same in detail it is to be understood that various changes may be made in its construction by those skilled in the art without departing from the spirit of the invention as defined in the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

i. A nozzle of the character described comprising a nozzle body, a coupling connection at one end thereof, a nozzle barrel at the other end thereof in axial alignment with the connection, said body having a valve chamber formed therein intermediate the barrel and said connection with its axis at right angles to the axes of said barrel and connection, said barrel having a center passageway formed coaxially therethrough and an annular passageway concentrically of the center passageway, said barrel having a center discharge orifice at the end of the barrel communicating with the center passageway, and a spray orifice communicating with, the annular passageway, said body having a primary port bers being circumferentially spaced and engaging the wall of the chamber with the first valve member normally covering the primary and secondary ports but permitting constant communication between the connection and said chamber, the relative disposition of said ports and valve members rendering the valve members capable when the yoke is revolved in a single direction a portion of formed therein between the valve chamber and the center passageway and a secondary port between the valve chamber and the annular passageway, the primary port being of a diameter agreeing with the diameter of the center passageway, a Venturi nozzle in said center passageway which comprises an open ended tube of an exterior diameter less than the diameter of the center passageway, said tube being positioned concentrically of the center passageway with its ends terminating short of the primary port and the discharge orifice, the said discharge orific being less in diameter than the interior diameter of the tube, a valve yoke rotatable in the valve chamber with its axis coaxial thereof, a pair of valve members carried by said yoke, said valve memcharge orifice being less a revolution of successively uncovering the secondary port and primary port and then coverin the secondary port.

2. A nozzle of the character described comprising a nozzle body, a coupling connection at one end thereof, a nozzle barrel at the other end thereof in axial alignment with the connection, said body having a valve chamber formed therein intermediate the barrel and said connection with its axis at right angles to the axes of said barrel and connection, said barrel having a center passageway formed coaxially therethrough and an annular passageway concentrically of the center passageway, said barrel having a center discharge orifice at the end of the barrel communicating with the center passageway, and a spray orifice communicating with the annular passageway, means for adjusting said spray orifice, said body having a primary port formed therein between the valve chamber and the center passageway and a secondary port between the valve chamber and the annular passageway, the primary port being of a diameter agreeing with the diameter of the center passageway, a Venturi nozzle in said center passageway which comprises an open ended tube of an exterior diameter less than the diameter of the center passageway, said tube bein positioned concentrically or the center passageway with its ends terminating short or the primary port and the discharge orifice, the said disin diameter than the interior diameter of the tube, and valve means for controlling the flow of fluid between the valve chamber and said primary and secondary ports.

ADOLPH NIELSEN. 

